A malicious application may be able to break out of its sandbox. This issue is fixed in macOS Big Sur 11.4, Security Update 2021-003 Catalina. A path handling issue was addressed with improved validation.
https://support.apple.com/en-us/HT212530
https://support.apple.com/en-us/HT212529
Source: Mitre, NVD
Published: 2021-09-08
Updated: 2022-07-12
Base Score: 4.6
Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P
Severity: Medium
Base Score: 8.8
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Severity: High